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Finding the Fourth Proportional to 8,615.70, 11,888.76 and 4,838.58

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Solution

The fourth proportional to 8,615.70, 11,888.76 and 4,838.58 is: 6,676.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.70 : 11,888.76 = 4,838.58 : x
  2. Step 2: Convert to fraction form
    8,615.70/11,888.76 = 4,838.58/x
  3. Step 3: Cross multiply
    8,615.70x = 11,888.76 × 4,838.58
  4. Step 4: Simplify right side
    8,615.70x = 57,524,716.36
  5. Step 5: Solve for x
    x = 57,524,716.36/8,615.70
  6. Step 6: Final answer
    x = 6,676.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.